learning_ai_common_plat/packages/ui/README.md

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# @bytelyst/ui
Shared component library for the ByteLyst ecosystem. Built with Radix UI primitives, Lucide icons, and CSS custom properties from `@bytelyst/design-tokens`.
## Install
```bash
pnpm add @bytelyst/ui
```
Peer dependencies: `react`, `react-dom`.
## Components (15)
### Button
5 variants (`primary`, `secondary`, `ghost`, `destructive`, `outline`), 3 sizes, loading state with spinner.
```tsx
import { Button } from '@bytelyst/ui';
<Button variant="primary" size="md" loading={saving}>Save</Button>
<Button variant="destructive" onClick={onDelete}>Delete</Button>
<Button variant="ghost" size="sm">Cancel</Button>
```
### Input
Text input with error/success states. Supports `aria-invalid` automatically when `error` is truthy.
```tsx
import { Input } from '@bytelyst/ui';
<Input placeholder="Email" type="email" />
<Input error="Required field" />
```
### Textarea
Auto-resize textarea with error states.
```tsx
import { Textarea } from '@bytelyst/ui';
<Textarea placeholder="Description" rows={4} />;
```
### Select
Styled `<select>` with keyboard navigation.
```tsx
import { Select } from '@bytelyst/ui';
<Select
options={[
{ value: 'a', label: 'Option A' },
{ value: 'b', label: 'Option B' },
]}
value={selected}
onChange={setSelected}
/>;
```
### Modal / Dialog
Radix `@radix-ui/react-dialog` with focus trap, Esc close, and `aria-modal`.
```tsx
import { Modal } from '@bytelyst/ui';
<Modal open={isOpen} onOpenChange={setOpen} title="Edit item">
<p>Modal content here</p>
</Modal>;
```
### ConfirmDialog
Radix AlertDialog for destructive/warning confirmations. Supports async `onConfirm`.
```tsx
import { ConfirmDialog } from '@bytelyst/ui';
<ConfirmDialog
open={showConfirm}
onOpenChange={setShowConfirm}
title="Delete item?"
description="This action cannot be undone."
onConfirm={handleDelete}
variant="destructive"
/>;
```
### Toast
4 types (`success`, `error`, `warning`, `info`), auto-dismiss, `role="alert"`. Use `ToastProvider` in your root layout and `toast()` anywhere.
```tsx
import { ToastProvider, toast } from '@bytelyst/ui';
// In providers.tsx
<ToastProvider>{children}</ToastProvider>;
// Anywhere in app
toast('Saved successfully', 'success');
toast('Something went wrong', 'error');
```
### Card
Container with `default`, `elevated`, and `interactive` variants. Includes `CardHeader`, `CardTitle`, `CardDescription` sub-components.
```tsx
import { Card, CardHeader, CardTitle, CardDescription } from '@bytelyst/ui';
<Card>
<CardHeader>
<CardTitle>Dashboard</CardTitle>
<CardDescription>Overview of your data</CardDescription>
</CardHeader>
{children}
</Card>;
```
### Badge
Status/count/risk-level badges, color-coded by semantic tokens.
```tsx
import { Badge } from '@bytelyst/ui';
<Badge variant="success">Active</Badge>
<Badge variant="danger">Critical</Badge>
<Badge variant="warning" count={5} />
```
### EmptyState
Placeholder for empty lists with icon, description, and optional CTA.
```tsx
import { EmptyState } from '@bytelyst/ui';
<EmptyState
icon={<FileText size={48} />}
title="No items yet"
description="Create your first item to get started."
action={<Button onClick={onCreate}>Create</Button>}
/>;
```
### Label
Styled form label.
```tsx
import { Label } from '@bytelyst/ui';
<Label htmlFor="email">Email address</Label>;
```
### Separator
Horizontal/vertical divider.
```tsx
import { Separator } from '@bytelyst/ui';
<Separator />
<Separator orientation="vertical" />
```
### Sidebar
Responsive collapsible sidebar with mobile toggle, overlay, and navigation items.
```tsx
import { Sidebar, SidebarItem } from '@bytelyst/ui';
<Sidebar
collapsed={collapsed}
onToggle={() => setCollapsed(!collapsed)}
header={<span>MyApp</span>}
footer="v1.0.0"
>
<SidebarItem href="/dashboard" label="Dashboard" icon={<Home size={18} />} active />
<SidebarItem href="/settings" label="Settings" icon={<Settings size={18} />} />
</Sidebar>;
```
### StatCard
Dashboard metric card with trend indicator.
```tsx
import { StatCard } from '@bytelyst/ui';
<StatCard label="Total Users" value="1,234" trend="up" trendValue="+12%" />
<StatCard label="Errors" value={42} trend="down" trendValue="-8%" icon={<AlertCircle />} />
```
### LoadingSpinner
Accessible loading indicator with `aria-busy` and `prefers-reduced-motion` support.
```tsx
import { LoadingSpinner } from '@bytelyst/ui';
<LoadingSpinner size="md" label="Loading data…" />
<LoadingSpinner size="sm" label="" /> {/* spinner only, no text */}
```
## Design Token Integration
All components use CSS custom properties with `--bl-` prefix and sensible fallbacks. Override them per-product:
```css
:root {
--bl-accent: var(--jj-accent); /* JarvisJr */
--bl-surface-card: var(--fm-surface); /* FlowMonk */
}
```
## Accessibility
Every component includes:
- `focus-visible` ring styles
- ARIA attributes (`aria-label`, `aria-modal`, `aria-busy`, `aria-invalid`, `aria-current`)
- Keyboard navigation (Esc to close, Tab focus trap in modals)
- `prefers-reduced-motion` respected via Tailwind's `animate-spin`
## Storybook
```bash
pnpm --filter @bytelyst/ui storybook
```
Storybook is configured with `@storybook/addon-a11y` for automated accessibility checks.